Issue 10/06 | 6 Commissioning |
6.4.7
P0771 = ...
P0773 =...
P0775 = ...
P0776 = ...
P0777 = ...
P0778 = ...
P0779 = ...
P0780 = ...
P0781 = ...
Analog output (DAC)
CI: DAC | 21 |
Defines function of the 0 - 20 mA analog output.
21 CO: Output frequency (scaled according to P2000)
24CO: Frequency inverter output frequency (scaled according to P2000)
25CO: Output voltage (scaled according to P2001)
26CO: DC link voltage (scaled according to P2001)
27CO: Output current (scaled according to P2002)
NOTE
For P0771 to P0781, the following applies:
Index 0 : Analog output 1 (DAC1), terminals 12, 13
Index 1 : Analog output 2 (DAC2), terminals 26, 27
Smooth time DAC | 2 ms |
Defines smoothing time [ms] for analog output signal. This parameter enables smoothing for DAC using a PT1 filter.
Permit absolute value
Decides if the absolute value of the analog output is used. If enabled, this parameter will take the absolute value of the value to be outputed. If the value was originally negative then the corresponding bit in r0785 is set, otherwise it is cleared.
0OFF
1ON
DAC type | 0 |
Defines the analog output type.
0Current output
1Voltage output
NOTE
•P0776 changes the scaling of r0774 (0 – 20 mA ⇔ 0 – 10 V)
•Scaling parameters P0778, P0780 and the dead zone are always entered in 0 – 20 mA For the DAC as voltage output, the DAC outputs must be terminated using a 500 Ω resistor
Value x1 of DAC scaling | 0.0 % |
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Defines the output characteristic value | mA |
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x1 as a %. |
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This parameter represents the lowest | 20 |
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analog value as a % of P200x |
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(depending on the setting of P0771). | P0780 |
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Value y1 of DAC scaling | 0 | y2 |
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P0781 |
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This parameter represents the value for |
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x1 in mA. |
| P0778 |
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| 100.0 % | y1 |
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Value x2 of DAC scaling |
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Defines the output characteristic value |
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x2 as a %. |
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| 100 % | % |
This parameter represents the lowest | P0777 | P0779 | |||
analog value as a % of P200x |
| x1 | x2 |
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(depending on the setting of P0771). |
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Value y2 of DAC scaling |
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This parameter represents the value for x2 in mA. |
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Width of DAC deadband |
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| 0 |
Sets width of deadband in [mA] for analog output.
MICROMASTER 440 | 39 |
Operating Instructions (Compact) |
